Ask HN: 2.5 years old twin boys not showing enough progress in speech

I am father of 2.5 year old twin boys. There are many kids of same age around me and I noticed that all of them have reached to some level of speech progress but that is not the case with my kids. In fact, kids' speech level is not even comparable to a kid who is slightly less than 2 year old.

Except for this concern, they are perfectly healthy and mentally alert. They show no other sign of any kind of trouble. Their hearing capacity is pretty good and have no trouble in understanding what is being said to him. They also learn doing things without much trouble/effort.

One of the twins do blabber a lot but rarely something meaningful. Although he is showing some promises as he started to use words like 'bye' and 'i love you' (he blabbers when it comes to 'love'). He also tries to count from 1 to 10.

The other one doesn't blabber that much or occasionally use some fixed (and usually incomprehensible) lines. Though both of them try to talk with some gestureing.

In general, they are lagging far behind as compared to other kids in speech related matters. How do I deal with this issue?

Edit: Per doctors, this is not a serious issue. They say it is only a matter of time and some kids start speaking a bit late.